DDEC TROUBLESHOOTING
34.1 DESCRIPTION OF FLASH CODE 34
Flash Code 34 indicates that the engine Turbo Boost Sensor (TBS), see Figure 34-1, input to the
ECM has dropped below 5% (normally < 0.25 volts) of the sensor supply voltage.
This diagnostic condition is typically:
Open sensor signal circuit
Open sensor +5 volt supply circuit
Sensor signal is shorted to sensor return circuit or to ground
Sensor +5 volt supply is shorted to the sensor return circuit or ground
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
34-3
